Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1990-08-02
1992-06-02
Peng, John K.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358254, H04N 572, H04N 5235
Patent
active
051191989
ABSTRACT:
A gain control device for a CRT video monitor in which the front face of the monitor corresponds to the screen of the tube and comprises various control buttons, among which is a gain control button. A gain control button circuit receiving the video signal in accordance with the invention is arranged at the neighborhood of the monitor rear face close to the tube socket. This circuit comprises an electronic potentiometer controlled by a d.c. signal set by a potentiometer arranged at the neighborhood of the front face and coupled with the gain control button.
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IBM Technical Disclosure Bulletin, vol. 25, No. 6, Nov. 1982, pp. 2793-2794, W. P. Marple: "Video Gain Control".
Practical Wireless, vol. 54, No. 5, Sep. 1978, pp. 24-26m B. Dance: "TBA 120 i.f. amp. limiter demod.".
Lacroix Jacques
Martinelli Rene
Burgess Glenton B.
Hewlett--Packard Company
Peng John K.
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